The item is a ultra-portable and multi-functional 5L waterproof dry bag pouch, which is mainly made of durable soft and flexible rip-stop PVC mesh fabric with watertight roll-top closure for maximum compression, and can be used to carry food, drink, clothes, cellphone, wallet, tablet PC, camera, and other personal belongings while sailing, rafting, camping, kayaking, hiking, boating, fishing and doing other outdoor activities. It comes with a buckle clasp hook for easy to hang it on your backpack. Besides, the waterproof bag can be compressed and foldable into a small size for convenient to carry when not in use.